JPH0544405Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is designed to
It relates to a rigid slab constructed by laying multiple floor panels such as ALC boards.

[Conventional technology]

Generally, in steel-framed buildings, roof slabs and floor slabs are constructed by laying floor panels such as ALC plates between parallel steel beams because it is relatively easy to construct and can be completed in a short period of time. Often configured.

In such cases, the ends of the floor panels can be constructed, for example, by arranging joint reinforcing bars along the floor panels at each joint between adjacent floor panels and welding the ends of these joint reinforcing bars onto the steel beams. It was fixed to a steel beam by passing it through a hole in a protruding anchor plate and filling the surrounding area with mortar or the like along with the joints.

[Problem that the invention attempts to solve]

However, in this configuration, the end of the joint reinforcing bar is simply passed through the hole in the anchor plate and mortar etc. is filled around it, so there is a risk that the end of the joint reinforcing bar may not be securely fixed to the anchor plate. Therefore, it was not possible to make full use of the joint reinforcing bars, which caused problems such as the inability to construct a slab with extremely high rigidity in the horizontal direction.

Note that horizontal braces are installed diagonally between the steel beams below the floor panel to ensure horizontal rigidity and strength, but horizontal braces and steady rests are installed separately from the floor panel. The cost increased due to the use of parts, and there was a lot of waste in the design.

In addition, the horizontal braces often got in the way, making it difficult to work on piping, ceilings, etc. Furthermore, top lights and atriums could not be installed freely, which often caused problems in the design.

This invention was made in order to solve the above-mentioned conventional problems, and it not only ensures high rigidity, but also enables economical design and construction, and greatly increases the degree of freedom in design. The aim is to provide a slab with increased rigidity.

[Means for solving problems]

In the rigid slab according to this invention, cutouts are provided at each corner of the floor panel so as to form a rectangular hole at the joint between adjacent floor panels,
A supporting metal fitting having a rectangular shape having approximately the same diameter as the hole and having a mortar filling hole at the corner is installed in the hole formed by the notch by bolting it to the steel beam. , reinforcing bars are arranged in the joint part along the longitudinal direction of the floor panel, and both ends of the reinforcing bars are fixed to the supporting metal fittings, and the supporting metal fittings and the reinforcing bars are arranged in the hole part and the joint part. It is constructed by filling with a filler material so that it is buried.

〔Example〕

The rigid slab according to this invention will be explained below based on an embodiment illustrating a plurality of floor panels 2 made of ordinary concrete, foam or lightweight concrete between steel beams 1 and 1 installed in parallel.
... are laid with their widthwise ends abutting each other and their longitudinal ends abutting each other on the steel beam 1 (see Fig. 1).

Notches 3, 3 are provided at each corner of the floor panels 2,...
A groove-shaped hole 4 is formed at the joint between two adjacent floor panels by the notches 3, 3 so as to reach the upper flange 1a of the steel beam 1 (see Fig. 5). ), rectangular holes 5 are formed at the joints of four adjacent panels to reach the upper flange 1a of the steel beam 1 (see the first
(see figure).

Supporting metal fittings 6 are installed in the cutout portion 4 and the hole portion 5, respectively.

The support fitting 6 is formed into a rectangular box shape that is approximately equal to the beam width of the steel beam 1 and has approximately the same diameter as the holes 4 and 5.

In addition, there is no ceiling part of the support fitting 6, but the bottom part 7
, a plurality of mounting holes 8 are formed on the upper flange 1 of the steel beam 1.
It is formed corresponding to the mounting hole 8 formed in a.

In addition, a floor panel 2 is attached to the side part 11 of the support fitting 6.
A through hole 12 is formed through the support fitting 6 in the longitudinal direction, and a filling material 17 such as mortar is formed in the gap between the support fitting 6 and the hole 4 or 5 on the lower side of each corner of the support fitting 6. Mortar filling holes 13, 13 for filling are formed slightly larger.

The support fitting 6 formed in this manner can be attached to a steel beam by inserting the mounting bolt 9 into the mounting holes 8, 8 of the support fitting 6 and the steel beam 1, and screwing the mounting nut 10 into the penetrating portion. 1 upper flange 1a
is fixed on top.

Note that the support fitting 6 is attached to the upper flange 1a of the steel beam 1.
It may be attached by welding.

At the abutting portion of the adjacent floor panels 2, 2, there is a groove-shaped joint portion 14 that opens directly above by slightly notching the edge portions of both the floor panels 2, 2 in the longitudinal direction of the floor panel 2. The two ends thereof are continuous to the through holes 12, 12 of the support fittings 6, 6.

In the joint portion 14, one to a plurality of reinforcing bars 15 are arranged horizontally along the longitudinal direction of the floor panel 2.

Both ends of the reinforcing bar 15 are connected to the through holes 12 of the support fittings 6, 6,
12, and is fixed to the supporting metal fittings 6, 6 by screwing fixing nuts 16, 16 into the penetrating portions thereof.

The holes 4, 5, and joints 14 are filled with a filler 17 such as mortar or concrete so that the support fittings 6 and reinforcing bars 15 are completely embedded in the filler 17.

In this case, slightly larger mortar filling holes 13, 13 are formed on the sides of the support metal fitting 6, and the small gaps between the support metal fitting 6 and the holes 4 and 5 can be filled from these mortar filling holes 13, 13. The material 17 is filled in this part so that there is no gap, and the support fitting 6 is
and the floor panel 2 are completely integrated.

[Effects of the invention] This invention has the above-mentioned configuration, and therefore has the following effects.

A plurality of floor panels laid on a steel beam are provided with a notch at each corner of the floor panel so as to form a rectangular hole at the joint of the adjacent floor panel. A supporting metal fitting having a rectangular shape having approximately the same diameter as the hole and having a mortar filling hole at a corner portion is attached by bolting to the steel beam in the hole formed by the Reinforcing bars are arranged along the longitudinal direction of the panel at the joints, and both ends of the reinforcing bars are fixed to the supporting metal fittings, and the supporting metal fittings and the reinforcing bars are buried in the holes and the joint areas. Because it is fixed on top of the steel beam by filling it with filler,
In-plane stress between floor panels is transmitted either directly or through reinforcing bars and filler placed at joints, and in-plane stress between floor panels and steel beams is transmitted by the support metal and the connection between this support metal and the hole. It is transmitted via the filler filled in between. In this case, a mortar filling hole is formed at the corner of the support fitting so that a filler can be filled into the gap between the support fitting and the hole. By filling even the slightest gap with the filler material, the floor panel and the steel beam can be completely integrated.

Therefore, it is possible to construct a horizontally extremely rigid slab in which the floor panel and the steel beam are completely integrated.

In addition, since the floor panel functions as a brace to prevent deformation of the beam assembly, the braces and steady rest members (buckling prevention) that were conventionally installed below the floor panel can be omitted, and these members can be This abbreviation allows for extremely economical structural design and construction, and since these members do not get in the way, ceiling finishing and piping work become easier, improving workability.

As a result of omitting braces, the ceiling can be made higher and top lights etc. can be freely installed, greatly increasing the degree of freedom in design.

Since the supporting metal fittings are formed into a simple shape and are attached to the steel beam by bolting, the supporting metal fittings can be manufactured and attached very easily.

[Brief explanation of the drawing]

1 to 7 show an embodiment of this invention,
Fig. 1 is a plan view of the rigid slab, Figs. 2 to 4 show the mounting state of the support fittings, Fig. 2 is an exploded view thereof, Fig. 3 is a side view, Fig. 4 is a plan view, and Fig. 5 is a plan view of the rigid slab. The figures are an enlarged plan view of section A in FIG. 1, FIG. 6 is a cross-sectional view taken along the line -- in FIG. 5, and FIG. 7 is a cross-sectional view taken along the line -- in FIG. 1... Steel beam, 2... Floor panel, 3... Notch, 4... Notch, 5... Hole, 6... Support metal fittings, 7... Bottom, 8... Mounting hole, 9... Mounting bolt, 10...Mounting nut, 11...Side part, 12...
...Through hole, 13...Mortar filling hole, 14...Joint part, 15...Reinforcement bar, 16...Fixing nut, 17...
...Filling material.

Claims (1)

[Scope of utility model registration request] In a rigid slab constructed by laying a plurality of floor panels between parallel steel beams, rectangular holes are formed at the joints between adjacent floor panels at each corner of the floor panels. In the hole defined by the notch, a support metal fitting having a rectangular shape having approximately the same diameter as the hole and having a mortar filling hole at a corner part is provided. It is attached by bolting to the steel beam, reinforcing bars are arranged in the joints between the floor panels along the longitudinal direction of the floor panels, and both ends of the reinforcing bars are fixed to the supporting metal fittings, and A rigid slab characterized in that the holes and the joints are filled with a filler so that the support fittings and reinforcing bars are embedded in the filler.